8 citations
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July 2019 in “The journal of investigative dermatology/Journal of investigative dermatology” This study found that the tensile strength of curly hair is influenced by two main components, with springiness (toe region) contributing significantly, unlike in noncurly hair where it is negligible.
October 2025 in “Dermatology and Therapy” This study observed that adults with thinning hair who ingested a patented botanical-based supplement experienced significant increases in hair shaft diameter and reductions in hair breakage over 180 days, suggesting improved hair strength and length across various demographic groups.
October 2022 in “Journal of Natural Fibers”
5 citations
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March 2017 in “International journal of GEOMATE : geotechnique, construction materials and environment” This study found that incorporating pig-hair fibers and green mussel shells in concrete increased compressive strength but decreased workability, suggesting potential use in structures not requiring strength above 28 MPa.
August 2016 in “International journal of scientific research in science, engineering and technology” This study demonstrated that incorporating human hair fiber into soft clayey soil significantly enhances subgrade strength and reduces cracking compared to unreinforced soil, as confirmed by unconfined compressive strength and CBR tests.